Sigh...I was just here posting questions yesterday. Okay, here's what's happened; I moved my betta from his 2.5g tank to 10g. Let the new system filter for 24hrs, tested for amonia levels, the heater has it at his normal temp, pH is identical...then I acclimated him, and he was much more energetic after being in his bowl I use while doing water changes.

He had a bit of a bright stripe along his body while floating in his baggie, but its faded since.

But after being free in his new tank, he wandered a little near the surface, then found the corner and has been flaring at his reflection for fourty-five minutes now.

I turned off the tank light, and just now put a towel over the tank hoping he'll calm down a bit but...I mean the room is white, so the natural lighting coming in is still bright enough to cause reflections. I plan to get a background and see if that helps, but...should I be worried if he continues like this? I've read amongst all the floating info on the net that even though it's a natural reaction, too much could srsly stress him out.

He'll probably get tuckered out eventually. Getting a background is a good idea. Also, try to use tall decor near where he's flaring? Or as a last resort you can put your hand right on the tank spot where he is flaring.

I don't think you need to be overly worried at this point. He's just establishing his territory. You might find a nice bubble nest in the morning!

If you do add a background, learn from my mistake. I bought one of the reversible black/blue plastic sheets from PetSmart and taped it to the outside back of the tank so that the black side showed through. The surface of the plastic sheet is quite reflective, so it was like a mirror 24/7. I now have a more matte background that I made out of paper. One of the plastic backgrounds in a pattern rather than plain black would probably also be fine.

He'll probably get tuckered out eventually. Getting a background is a good idea. Also, try to use tall decor near where he's flaring? Or as a last resort you can put your hand right on the tank spot where he is flaring.

I've tried both of those...once her swam away, but just went right back. But thank you so much for replying, I've been stressing out over the little guy all day.

I don't think you need to be overly worried at this point. He's just establishing his territory. You might find a nice bubble nest in the morning!

If you do add a background, learn from my mistake. I bought one of the reversible black/blue plastic sheets from PetSmart and taped it to the outside back of the tank so that the black side showed through. The surface of the plastic sheet is quite reflective, so it was like a mirror 24/7. I now have a more matte background that I made out of paper. One of the plastic backgrounds in a pattern rather than plain black would probably also be fine.

I was planning on using a painted canvas I made actually, has some blues, purples and greens on it, but it's matte. Unfortunately the filter is a little in the way. But thank you for the tips, I didn't even consider the background being shiny too >.<

Is it bad if they do that? I just got my betta a new 10 gallon a couple days ago and I did notice he was doing something similar, but instead of flaring, he just swims on the left side of the tank and now he stop since I got some tall decor to block it.

Is it bad if they do that? I just got my betta a new 10 gallon a couple days ago and I did notice he was doing something similar, but instead of flaring, he just swims on the left side of the tank and now he stop since I got some tall decor to block it.

I've read that constant flaring is bad for them, cause it's continual stress. I'm going to add some more tall stuff now and see if this helps.